Surface area of a sphere = 4 x (pi) x (radius)2
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How do you find the suface area of a net? Answer: Do the formula for each shape that is in the net.
4(pi)r^2 (4 * pi * r^2)
Surface area = 4*Pi*radius2
To do this question, we have to ask ourself, what formula do you use to find the surface area of a sphere. The answer should be known to you, but it is 4πr2. Since we know how to find the surface area for a full sphere, then finding the surface for a half sphere is just half the job. You use the formula for the full sphere 4πr2, and divide it by 2... so (4πr2) / 2 . Voila!
Assuming the moon to be a sphere, the formula to find its surface area is 4/3*pi*r^3 where r is the radius of the moon.